Concrete-molding machine.



-PATENTED DEC. 3, 1907.

L. 1).. EWING. I CONCRETE MOLDING MACHINE.

APPLICATION FILED APE. 28.1905.

@uvanfoz I Witness No. 872,333. I PATENTED DEC. 3, 1907.

L. 1). EWING. CONCRETE MOLDING MAOHINE.

APPLICATION FILED APB.28,1905.

5 SHEETSSEERT 2.

Witness No. 872,333. PATENTED DEC. 3, 1907.

L. D. EWING. CONCRETE MOLDING MACHINE.

APPLICATION FILED APB. 28,1906.

6 sums-3mm: s.

No. 872,333. PATENTED DEC. s, 1907 L. 1). EWING.

CONCRETE MOLDING MACHINE.

APPLICATION FILED APR.28,1905.

6 SHEETS-SHEET 4..

PATENTED DEC. 3, 1-907. L. 1). EWING. CONCRETE MOLDING MACHINE.

APPLIOATION FILED APR. 28. 1905.

SHEETS-SHEET 6.

Witwzoowo UNITE s rarns PATENT OFFICE.

LEWIS D. EWING, OFAKRON, OHIO.

CONCRETE-MOIlDING Specification of Letters Patent.

Patented Dec. 3, 1907.

Application filed April 28. 1905. Serial No. 257.860.

To all whom it may concern:

, Be it known that I, Lnwrs D. EWING, a citizen of the United States, 'residing at Akron, in the county of Summit and State of Ohio, have invented certain new anduseful Improvements in- Concrete-lVIolding Machines, of which the following is a specification.

. My invention relates to improvements in concrete molding machines, and among its several objects is to improve the hopper construction; to provide means for striking off the surplus material in the hopper after the mold box thereunder has been filled; to

facilitate the adjustment of the parts of the.

hopper to adapt it for diil'erent'forms of molds or mold boxes; to provide means for open ng and closing the mold box and ad ust the same for different slze blocks; to improve the construction of the cores in the mold box, and to provide means whereby the molded products may be transferred directly ontoa truck for final disposition.

The invention consists in certain mechanism whereby the hopper serves to convey material to the mold box. The cores and longitudinal division plates in the mold box products.

the motion of bringing the mold box to its are automatically withdrawn from the mold box after the molded product has been completed as the mold box is turned over to discharge the contents on the carrier, the car rier'being located in position to receive the The cores and division plates automatically enter the mold box for a new charge of material in position-for filling, and

original position also lowers the carrier and the molded products therewith, and places the molded product on the truck located in convenient position under the carrier.

The invention further consists in certain novel features of invention and combinations and arrangements of parts as hereinafter described and claimed. I

In the drawings: Figure 1 is a side elevation of the entire machine, the hopper being shown in position ,to receive material, and the mold box in position for dischargin its contents. Fig. 2 is a broken top lan o the machine with mold box and be plate removed on one side, and showing half top view of the mold box and bed plate on the other side. Fig. 3 is a side elevation of the complete machine showing the hopper over the mold box, the machine being in )osition for molding the concrete blocks. ig. 4.- is

, a View of the machine showing at the left a half front elevation, and at the ri ht a similar View as seen from the rear. ig. 5 is a view of the hop er box, mold box, and sectional core, one iialf being in section- Fig. 6

is a cross section on line aa Fig. 27. Fig. 7

is a cross section through the bottom lates of the core openings. F igs. 8 and 9 ilustrate the swinging brackethook which supports the swin in mold Fi 8 bein a front view D D D D and Fig. 9 aside elevation thereof. Figs. 10 and 11 are detail views showing parts of the sectional cores. Fig. 1'2 shows in section a detail of the truss construction showing supporting pin and roller bearing pins. Fig. 13 is across section on line 21 21 of Fig. 26 through flexible mold and supporting bracket. Fig. 14 is a rear view as seen from the left in Fig. 13. Fig. 15 is a detail cross sectional 'view showing the construction of the key plate attachment to side mold box. Fig. 16 shows the key plate and hinge at tached to a sectional mold. Fig. 17 is cross section of bracket supporting hinges I on the sectional mold. Fig. 18 is a view of the bracket key and key plate. Fig. 19 is a sectional View of brackets su porting stationary mold key plate, an method of fastening to bottom plate and supporting bar. Fig. 20 illustrates the oscillating link in its connection with the frame. Fig. 21 shows the core balancing arm'and stop on the frame. Fig. 22 is a top view showing sectional mold, sectional longitudinal division plate, transverse division plates andunder portion of end truss supporting frame. Fig. 23 is a cross section centrally through a core. Fig. 24 is a section on line b-b Fig. 27. Fig. 25 is a cross sectional view showing attachment. of oscillating link and core and balancing arm to frame. Fig. 26 is a top View in part, showing flexible sides to the molds and brackets supporting the same. Fig. 27-is a top view in part showing mold box arranged to form a multiplicity of small articles, as brick, tile, etc vl ig. 28 shows a modification wherein a stri is added to the bottom plate of the mol box for enlarging the same.

In the drawings: The numeral '1 desig nates the frame of the machine; 2, the" swingingllop )er as a whole, which is pivotedto the frame y the duplicate pairs of swing a'rmsS, a pair of swin arms .being located at each side of the mac line. extensible sectional hollowNshaftss-or.pipe

l 10. These arms are the sections being connected by any WelL ia'd'ustment.

known jolnt, as a bayonet lock 4, and the {sections may be extended or contracted by- {means of the joint and band 5, by whichmeans the. arms may be held in any desired he to ends of the arms 3 are pivotally connects tothe hopper by stud bolts 6, and the lower ends of the arms are provided With couplings 7 which have hearings on the,

'. shafts 8. The weight of the hopper is coun 'terbalanced by weights 9.

The end members of thehopper are provided with slots 10 through which are passed bolts 11 to permit an adjustment and clamping of the side members 12 of the hopper to reduce or increase the size thereof. To the end members of the hopper are bolted or otherwise attached the bars 13. The duplicate bottom plates 14, 14 14 are supported on and capable of sliding on these bars 13.

I, The bottom plates 14 are provided with handles 15 on each side of the machine for I conveniently operating the sliding plates of 2,5

i-bottom, and when extended by i'novement of the handle 15 thc raised portions or lugs the bottom. The plates form an extensible I "16 of the plates engage each other as the plates are drawn forward by the handles, and in the revcrse'motion the bark edges 17 of the plates come in contact \\'ith lugs on tl 1e plates, thereby imparting the same hopper is open) thereby striking oil' the surplus material, and retaining the surplus in' the hop er, thus avoiding waste and scattering of t 1e surplus material over the machinery. After the extensible. bottom of the hopper is closed, the hop )er as a whole is carried from the mold be on the swinging arms 3, to position to receive a fresh charge of material.

When the hopper has been re-filled it is again swung to its original )osition over-the mold box, and the extensib e bottom thereof is again openedto allow the material to fall into the mold box. As indicated in dotted hnes in Fig. 4, the supplementary end members 20 of the hopper may be applied thereto,

.hand are adjustable to contract or enlarge the if size of the hopper for different size molds.

.The'mold box 18 is formed of the two end and two side mold plates 18 and 18 respectively, and one or more bottom plates .*'18 The sides and end plates have adjustgable key plates 21 fastened at theoutside fli thereof by bolts 21 which pass through slots plates. I

- Thefsupporting frames are held in place or holes provided in the plates. The side mold plate 18" is fastened to stationary bracket 22, and the bracket is in turn supported on and fastened to the bottom plate 18 by bolts 23. Mold lates 18". are also fastened to supporting ar 24 carried by bed plate 43, said plates being fastened by bolts 25. One of the side plates at each side of. the machine is fastened to bracket 26 which is carried by shaft 27. the mold is opened and closed by levers 28 on shaft 27,'the mold being held-imposition (See Figs. 7

In operation (closed) by gravity latches 29. 3, 27 The clamp hooks 29'- (see Figs. 1, 3, 8, 24) are fastened on bracket 26 by pin 29 and clam) the carrying oif board'88 on the mold whii e the mold isbeing revolved.

The hooks are opened or disengaged by movement of shaft 27.

Referring particularly to Figs. 27 and 6,

it will be seen that the end .mold plates are fastened to sliding frames or brackets 30 by bolts through the clamping plate 31. These sliding frames or brackets are supported by.

truss bars 32 which are ada ted to move the sliding frame on lines para lei to and from the mold box. There are four pairs of these bars 32 two at each side of the mold. One pair of bars is pivoted at 32' on sliding frame ,30. The otherends of the bars are provided with roller bearings 33," and these rollers slide in slots 34 of the supporting frame 35. One end of the otherpair of truss bars 32 is pivoted on. stationary pins 36 on'frame 35.

and the other end of sald pair of bars is pro-- vided with roller bearing pins 37 located in slots 38 on the sliding .frame 30. The I braces or bars 32 are centrally connected at the under side of the frame b a stud 39.

The operation of the movab e side and end mold plates is accomplished by the oscillation of bracket 26 attached to shaft 27.,

Shaft 27 extends through and beyond the outer ends of hollow shaft 27, and .to the projecting ends of shaft 27 are fastened the andles 28 by which handles the brackets 26 are operated through the shaft 27.

The siding frames 30 are provided with extensions or arms 30 Whichar'e provided 1 with roller. bearing pins 30f to operate in the tangent grooves 40, said grooves be ng located in an extended portion of the bracket 26. Thus the/same movements of lever 28 in opening) and closing the roller earings 30' to slide in the grooves the side mold, cause 40 thereby opening or closing the 'end mold by hinged brackets 41 and slidingibrac'kets 35' (see Fi 4. The hi dflhmke'gai ma be fastene either to the bed-plate 80 or sup porting The ..s1i.d n" brackets 35' (S86 on be/- tween brackets 26 anti-icollars 44 and, the arrangement is such tha't frames 35 1 can purpose ofmold ng tile, brick, or other small I articles. The longitudinal plates 48 are' placed at different positions and angles to the mold boxy In'the lower half of Fig. 2 is shown in top plan a portion of a mold box provided wit twobottom plates 18 and 18 having'eore openings 18. Said bottom plates are s aced apart a sufficient distance to allow the ongitudinal division plates or late 45 to pass vertically between them. y this arrangement two blocks of concrete can be molded at the same time. By the addition of more longitudinal division plates and narrow bot.- tom plates, a greater number of blocks may be made at one operation, such as partition blocks, slabs &c.

In Figs. 2 and 24 a portion of the mold box is shown having one of its sides provided with a sectional mold side (or a number of small'mold sides) supported by bars 46, the

. sections longitudinal division plate 45 being composed of sectional parts which are attached to'icross bars 46 as shown. The transverse division lates 47 are held in position by the l division plates 45 and the sectional molds, and do not interfere with the operation of the hopper plates above them.

In Fi ."27 is shown a top view of a mold box whieh is interiorly subdivided into a number of small molds by division plates 48 and transverse divisionplates 49 for the att'ached to crossbars 46 (see Fig. 24). The-plates 48 are slotted for the purpose of receiving and holding thetransverse plates '1. 49. -Metal bars 51 and 52 are fastened on ;-the sides ofboth series of division plates to impart rigidity thereto.

1 Fig. 26 is she wn a portion of a mold box having two flexible sides for the pur ose ding circular or curved bodies. T ese sides are held in place by brackets 53 and 53". The inside brackets 53 are fastened on a separate board 54 which board is held in place by end mold bars 55. Mold bars 55 swing on brackets 41 and are opened or closed by pin 30 in groove 40 as before described, being operated from lever 28. Projecting lugs 56, on mold bars 55 are provided with slots 56 and a bolt 56 passes through the slot to retain the end mold in position while the mold box is being turned over, as will be described. ,The flexible mold is formed by attaching flexible strips 53 to brackets 53 and'53 and a brace or stiffening plate 57 (Figs. 13, 14) is placed against sai strips. Portions of the edges of said strips or (plates'are cut away'to allow for bending, an

the remaining portions or lugs are turned over the up or and lower edges of the strips so as to he (1 the metal plates or braces in place (Fig. 14).

InFig. 6 the attachment of the various bottom plates of the mold box .to the bed plates 86 is illustrated. The end 'ofthe bot- The resistance thus given bythelifttigg tom plate 58 is dovetailed and fits into a recess in the bed plate, being held in place through bolts 59 in clamping bar 60. By loosening the bolts 59 the bottom plates may be adjusted to vary the size of the blocks desired. The wall of the next blocks may be increased-in thickness by inserting sectional bottom plate stri s as 120 in Fig. 28.

In Fig. 28 the ottom plate 119 of the core box may be rovided with a strip 120 added thereto for tiie pur ose of enlarging the area of the wall of the b ock. e

As clearly shown in Fig. 5the core 61 is provided with a tapering central portion. The sectional side pieces 62 are made to fit on the body of the core-with corresponding tapering edges and are provided with two rojecting ln s 62 and 62', (see .Fi 23) w ich are provi ed with slots 63, 63' ocated at a slight angle to the perpendicular, through which slots the bolts 64 are passed. In 0 oration, a pull on the cross bar 65 draws t 6 central portion of the core and as the bolt 64 moves alon the slots 63 63, it draws the sectional sides closer together and releases the sides from the material being molded. The cores are fastened to the bars 65 by bolts 66, and bar 65 is attached to the truss bar 67, as shown in Figs. 4 and 5 by plate 66 and bolts.

The truss bars 67 arecarried to and from the mold box by trusses 68 (Figs. 1 and 4). Cross braces 69 are fastened to truss bars 67. Cross braces 69 are fastened to the truss bars by stud pins 70 on which pins the braces revolve. are rovided with roller bearing pins 71 whic 1 move between slides 72 fastened to projecting lugs on the underside of bed plate 80''. ported by and revolve on hollow shaft 27 (Figs. 2' and 20). The opposite ends of the braces are provided with roller bearing pins 71 which move between slides 67-on truss bars 67. Braces 69 having attached to their sliding ends projecting pins or supports 73 which in operation come in contact with stops 74 and thereby assist in holding the core 61 and carrying device at any desired position (see Figs. 1 and 3).

The truss bars 69 and 69 are united centrally by pins 75 and thus complete the trusses, at each side of the machine. The heads of the pins 75 support theend of the operating arms 76. These arms 76 are prowhich arms carry the weights 79;

The corresponding braces 69 are sup-' In operation when the mold box is in posi-I tion shown in Fig. .1 the operating arIns ;76 rest on the adjustablestops,'80 on arms 78.

weigh-ts 79 assists to keep the coges .6 tion 'wlrile the mold box isfbei also assists in overturn ng them'pld box until of the i PQ e d i 120- vided at their'opposite ends with studpins 1 77 which slide in slots 77Xin w'eiglit arms 78,

the weights hang perpendicularly, in which position the weights remain until pins 77 in the ends of the arms v78 come in contact with'- the end of the slot 7 7 therein, when said weights will again balance the load, and are carried forward until thearms 78' come in .contact with stops 80 (Fig. 21) on the frame The cores are made to reenter the mold box bythe above described pins 7 3 coming in contact with stops 7 4 assisted by. theweights 79. When'said weights are hanging perpendicularly, the overturning bed plates are balanced over the turning pins.

The bed lates 43 are connected to the frame 1 by inks 81. Figs. 20 and 21 show how the connecting-link 81 is attached to the frame, by pins 82 and also shows the weight arms supported on pins 82. The other end of the connectinglink 81 supports the hollow shaft 27 (Fig. 2) on which the bed plates revolve.

. It will be observed in Fig. 3 that a portion of the mold box projects beyond the pins 82,

thereby partially balancing the weight andlessenin the labor that would otherwise be re uire to turn over the mold box. The we1ght is carried on pins 82 until connecting links 81 come in contact with the frame support (Figs. 1 and 20). The weight is then transferred to the hollow shaft 27 on which the bed plates 80 revolve until in position for discharging the contents of the mold box.

When the connecting link 81 rests on frame support as shown in Fig. 20 with the bed plates resting on both points of the connecting links, the mold box is in an advantageous position for facing or veneering the blocks with select material.

The bed plates are-provided with handles 84 which are used in turning over the mold box. The extended portions of the plates are provided with slots 85 and adjustable pins 86 are fastened in said slots at the point required to bring thecar-ricrs 87 against the carrying board 88 (Fig. 1). 'ln operation, as the bed plates'a're turned over by handles 84 I to dischargethc contents of the mold box, pins 86 engage hooks 89 and thereby lift the carriers until they come in. contact with carrying boards 88, when a downward pressure on handle 28 opens the mold box and con tents are deposited on the carryingboard 88. The returning of'the mold boxto its first position lowers"the carriers and places the carrying board on the truck 90 beneath the machine, thereby saving the handling of the material. The weight of the material as it rests on the carriers greatly assists in lifting movement.

The hooks 89 are held in position b tennected to brace arms 94 and 95 as shown in Fig. 2 by' shafts 95 96, 97 and 98. 95 and 96 revolve on bearings in the frame, and one end of shafts 97 and 98v are conyond the brace arms 94 and 95 and supports the carrier bars 100.

The tamjping platform 101 revolves on shaft 102' and the arm 103 serves as a support for the planks of the platform. Gravity supports 104 support the platform while in use and the weights 105 are provided to bal ance the platform. WVhen the platform is thrown back out of the way for-discharging engage ratchets 107 and. by moving the platthe next block to be molded.

machine can be lengthened for the molding of sills, and other long articles. To the end frames 108 are attached sectional sleeves 109, 1 10 1 1.1, interior of which are shafts corresponding in thickness to openings in said sleeves. The ends of the sectional sleeve shafts are slotted lengthwise for a short istance with a short transverse slot at the end of the same for contraction by clamps 112 113 and 114. The ends of the sectional shafts are placed betwen the end frames and clamped in place by bolts which fasten the frames together. In Fig. 7 a cross section of the bottom plates 130, 13]. 132 and 132 of the mold box is shown illustrating how the adjustable pieces 115 slide in grooves 116 for the purpose of arranging the core openings. pieces are held in place by clamping bars 1 17 which are bolted to the sectional pieces b bolts 118 for the purpose of arranging di ferent core openings in the blocks, said plates in the lower side of'the block, as at the right side in Fig. 7, or placed to form a smooth surface on the block, as at the left in said figure.

What I claim and desire to secure by Letters Patent is: 1. In a concrete molding machine, the

having adjustable sides and adjustable ex- 2. In a concrete molding machine, combinationwith a mold box of 'a swinging hopper havin adjustable sides and adjustab 0 end. tensible'bottorn. I p 3. The combination with 'a' nioldbox'nf a sion guides 91 and the hooks are atta'c' ed to arms 92 by bolts 93. The arms 92 are con nected by bars 99, the other end projects be-- the contents of the mold box the spurs 106 The construction of the shafts connecting the ends of the machine are such that the combination with a mold box of a hopper 120 tension members, and provided with an extensible bottom. l

the mold'box in the first portion of its return. (15

Shafts form forward the truck is moved forward for.

The I I may-be inserted to form an indentation .12 mem 'ers, and providedwith an e X 40 machine, of a hopper a moldbox and cola concrete machine, of a hopper having its sides adjustable and provided with extensible bottom plates, and adjustable supportingoscillating arms provided with balancing Weights for swinging the hopper to and from the mold box.

6. The combination in a' concrete molding machine of a hopper provided with adjustable sides, adjustable extension sliding members forming the bottom thereof, ad'ustable extension sliding end members and means for holding the same in adjusted position, and means to convey the hopper to and from the mold box.

7. The combination in a concrete molding machine of a mold box, a hopper provided with extensible side and end members, an extensible bottom, side bars for supporting and guiding the extensible bottom, and oscillating arms supporting the hopper for iwingingsaid hopper to and from the mold 8. The combination in a concrete molding machine, of an oscillating hopper, a mold box and cores therein, means for turning said mold box to discharge its contents, and

' means for automatically withdrawing the cores therefrom as the box turns.

9. The combination in a concrete moldmg lapsible cores therein, said box having sectional sliding bottom plates, means for overturning said box to empty its contents and automatically" withdraw the cores therefrom, and. means for retintering said cores into the box as the box is righted.

10. The combination in an oscillating concrete molding machine of a hopper, a mold box and collapsible cores therein, said box having flexible. side mold plates means for turning said mold box to empty its contents, and automatically withdrawthe cores therefrom, and means to counterbalance the weight of the cores and core carrier.

11. The combination in a mold box of collapsible cores and division plates therein, said box having flexible side mold plates and sliding bottom plates, means for withdrawing'said cores and plates therefrom as the box is overturned and to reenter the same therein, andmeans to counter balance the weight of saidcores. 7

12. The combination in a machine of the character described of an oscillating hopper,

a mold box, means for overturning the box,

and means for transporting its contents to a movable vehicle.

13. The combination in a mold box, of collapsible cores and division plates therein, sectional sliding bottom plates and flexible side mold plates adapted to make various curves for molding concrete blocks.

14. The combination in a concrete molding machine of a mold box having flexible side plates and ends, brackets supporting said sides and ends sliding sectional bottom plates, means for contracting or enlarging the mold box and a shaft for operating said means.

15. The combination in a molding machine of a mold box having a movable side plate, movable end plates, and sectional bottom plates, pivoted cross bars connected to the end plates of the box, and means for moving said bars to increase or decrease the area of the box.

16. The combination in a concrete molding machine of a mold box havin end plates and stationary and movable si es, pivoted cross bars connected to the sides, a sliding frame connected with the cross bars, a shaft with a tangentially slotted bracket thereon, a pin on the sliding frame engaging said groove, and a handle on the shaft.

17. The combination in a concretemolding machine of a mold. box having a movable side and movable ends, an oscillating bracket 26 having a groove therein, a sliding frame connected to the mold box having a pin in said groove, a'shaft supporting the bracket, and a handle on the shaft.

1.8. In a mold box the combination of a bed plate, a hinged bracket and a sliding frame connected to 'the movable side'and ends of the box, pivoted truss bars connected to the sliding frame, and means for operating said bars to open or close the inold box.

19. The combination in a mold box of a bed plate, a hinged bracket and a sliding frame connected to the movable side and ends of the box, pivoted truss bars connect ed to the sliding frame, a roller bearing in the frame, a shaft carrying a tangentially grooved bracket, said rollerlocated in the groove, and a handle to the shaft.

20. The combination in. a mold box of a bed plate, a hinged bracket and a sliding frame connected to the movable side and ends of the box, said sides being flexible, a roller bearing in the frame, a shaft carrying a tangentially grooved bracket, saidroller located in the groove, and a handle to said shaft.

21. The combination in a mold box having movable ends, means for operating said ends, of sectional bottom plates and flexible side plates to said box provided with adjusting means.

22. The combination in a mold box having movable ends, adjustable supporting means for said ends, sectional sliding bottom plates and adjustable flexible side plates to said box, and operating means therefor.

23. The combination in a molding machine and with the frame thereof of a revolving bed plate and mold box thereon, cores in said mold box trusses connected to said bed plate and. having theiropposite ends connected to a truss bar, said trusses pivoted together at their centers, an operating arm connected tosaid pivot, and means for oper ating said trusses through the operating arm.

24. The combination in. a molding machine of a revolvingbed plate, a mold box, cores in said box trusses connected to said plate and having their opposite ends connected to a truss bar, said trusses pivoted together at their centers, an operating arm connected to said pivot, a weight arm con- I nected with the operating arm, and also con nected to the bed plate.

25. in a molding machine, the combination. with a mold box having llcxible side plates and sliding bottom plates, of acoll-apsible core, operating means therel'or, and

- means actuated vfrom the machine to col- I for withdrawing said cores, bed plates to the box, means for overturning said bed plates and box, a carrying board for receiving the contents of the box, and means for transporting said board and contents.

29. The combination in a eoncrete machine of a mold box having stationary and m0vable sides and end plates, a sliding frame connected to said plates, pivoted crossbars connected to said frame, a shaft with a tangentially slotted bracket thereon, a pin on the sliding frame engaging said slotted bracket, and a handle on the shaft.

30. In a machine as described, the combination with a mold box and a block therein,

of reversible members adapted to seat in said box, and project Within the block to form a depression in the web of the block.

31. In a machine as described, the combination with a bottom plate of a mold box and block therein, and an invertible member adapted toseatin the box and project within.

said box to form a depression in the block.

32. An adjustable sectional bottom plate provided with invertible members, said members adapted to project within the mold and ble bottom.

form an indenture within the Web of the block.

33. The combination with a mold and block therein of a sectional bottom-plate consisting of reversible members adapted to seat in the mold and project within therein to form a depression in the block.

' 34. The combination with a mold box, of a swinging l'iopper having adjustable side and end members-and provlded with an extensi- 35. The combination in a molding ma- 7 chine,-of a mold box having movable sides, pivoted cross bars connected to the sides, a sliding frame connected with the cross bars, a shaft with a bracket thereon, and means on the sliding frame engaging said bracket.

36. 'lhe'crnnbination in a mold .box, of a bed plate, movable sides and ends to'the box,

a bracket and frame connected to the movable sides and ends,a sliding frame bars 0011- nected to the sliding frame, and means to opcrate said bars to open or close the mold box. I

37. A concrete molding machine cempris ing' a mold box, a hopper having extensible A sides and bottom, and oscillating arms for swinging said hopper to and from the mold box. i

'38. A concrete molding machine comprising a mold box, a hopper having extensible sides and bottom, swinging arms for conveying the hopper to and from the mold box,-

and means for turning the mold box to 'dis- I,

charge its contents. 39. A concrete moldmg machine comprising a frame, a revolving bed plate and mold box thereon, trusses connected to said bed plate and having their opposite ends connected to a truss bar, the trussesbeing pivoted together, an operating arm connected to the trusses, and means for actuating the op- '105 crating arm.

40. A concrete molding machine comprising a mold box, a hopper ada ted to convey material thereto, a carrier, an means for automatically causing the mold box to discharge the molded contents on the carrier. I

41. A moldingmachine, comprising a mold box, movable cores in said box, a hopper to convevmaterial to the mold box-, a carrier,

and means for automatically withdrawing 118,

the cores from the mold box and depositing the molded roduct on the carrier. 4

42. A mo ding machine comprising a mold box, adjustable cores and divlsion plates in said box, a hopper for automatically convey- '120 ,ingmaterial to the mold box, a carrier, and

means for automatically withdrawin 'the cores and. division plates from the mol box and depositing the molded product upon thecarrier. V 43. A molding machine compi'ising a mold box, adjustable cores and division 'lat'es therein, a carrier, means for automatcally withdrawing the cores and division plates from the box and depositing the molded product on the carrier, and means for automatically rcentering the cores and division plates in the mold box.

44. A molding machine comprising a mold box, adjustable cores and division plates therein, a pivoted hopper for supplying the .mold box, means for automatically withdrawing the cores and division plates from the box, and means for rentering the same in the mold box when the box is cleared of its molded product.

45. A molding machine con'iprisii'ig a mold box, a hopper to supply-the same, adjustable cores and division plates in the mold box, a carrier, means for withdrawing the cores and division lates from the box and depositing the molt ed product u on the carrier, and means for rentering the cores and division plates in the box.

46. A molding machine comprising a mold box, a swinging hop or to supply the same, adjustable cores and division plates in the "mold box, a carrier, means for withdrawing the cores and division plates and depositing the molded product upon the carrier, and means for return ng the parts to their original position.

'47. A molding machine comprising an ad- ]ustalfle mold box, a swinging hopper to supply the mold box capable of ad ustment to suit the mold box, means for conveying the surplus material from the mold, and means the surplus material therein after the mol box has been tilled.

49. The combination with a mold box adjustable in each direction, adjustable cores and division plates for use in the mold box, of a hopper to supply material to the mold box, said hopper being adjustable to suit the mold box. 1

50. A molding machine comprising a frame, a truck beneath the frame, an adjustable mold box, an adjustable swinging hopper to supply the mold box, a carrier, adjustable cores and (livision platcs for the mold box, means for withdrawin the cores and division plates from the mold box arid depositing the molded product upon the carrier and thence upon the truck, and means for reenterin the cores and division plates in the mold ox and returning the parts to their original position.

In testimony. whereof I aflix my signature in presence of two witnesses.

LEWIS 1). EWING.

Witnesses:

W. 'J. Laue, W. Utivna WISE. 

